/*
 * Copyright (C) 2011 Thomas Akehurst
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.tomakehurst.wiremock.http;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;

public class HttpHeadersJsonSerializer extends JsonSerializer<HttpHeaders> {

    @Override
    public void serialize(HttpHeaders headers, JsonGenerator jgen, SerializerProvider provider) throws IOException {
        jgen.writeStartObject();
        for (HttpHeader header: headers.all()) {
            if (header.isSingleValued()) {
                jgen.writeStringField(header.key(), header.firstValue());
            } else {
                jgen.writeArrayFieldStart(header.key());
                for (String value: header.values()) {
                    jgen.writeString(value);
                }
                jgen.writeEndArray();
            }
        }
        jgen.writeEndObject();
    }
}
